The typical replacement bulbs for a 2011 Chevy Impala are an H11 for the low-beam headlight and a 9005 for the high-beam headlight. If your model has fog lights, they usually use H11 as well. Some trims or dealer-installed options may include HID or LED setups, which use different components.
Bulb types for the main headlights
Below are the bulbs you’ll most often need for the primary headlamps on a 2011 Impala. Note that some trims or options may vary.
- Low beam: H11 halogen bulb
- High beam: 9005 (HB3) halogen bulb
- Fog lights: H11 halogen bulb (if your model has fog lights)
Always verify with your owner’s manual or by inspecting the bulb on the housing, since some configurations (especially dealer-installed packages or early production runs) may differ.
HID/LED and identification considerations
Some 2011 Impala models offered HID headlights or aftermarket LED upgrades. These do not use standard halogen bulbs and may require ballast units, dedicated housings, or LED modules instead of H11/9005 bulbs.
How to tell what headlight type you have
Check the vehicle’s specifications in the owner’s manual or on the driver’s door jamb label. If you see references to D2S/D2R, D3S, or ballast components, you likely have HID headlights. LED headlights use integrated modules rather than replaceable halogen bulbs. When in doubt, consult a dealer or qualified technician to confirm the exact setup.
Replacement steps for standard halogen headlights
Before replacing, ensure you have the correct bulb type for your specific trim. The steps below describe replacing standard halogen bulbs when your Impala uses H11 for low beams and 9005 for high beams.
- Turn off the engine, open the hood, and locate the headlight assembly.
- Remove the dust cover from the back of the headlight housing to access the bulb.
- Unplug the electrical connector from the bulb and release any retaining clip or twist the bulb counterclockwise to remove, depending on the design.
- Insert the new bulb (H11 for low beam, 9005 for high beam) into the correct socket with proper orientation, and secure it.
- Reconnect the electrical connector, replace the dust cover, and test the headlights.
After replacement, check for proper beam alignment and ensure both low and high beams function correctly.
Summary
The 2011 Chevy Impala’s standard headlamps use H11 low-beam bulbs and 9005 high-beam bulbs. Fog lights, if equipped, typically use H11 as well. Some trims offer HID or LED headlights, which involve different components and are not compatible with halogen bulbs. Always verify the exact bulb type for your vehicle by consulting the owner's manual or inspecting the current bulbs, and seek professional help if you’re unsure about the system.